Zhong-bo HE, Ce RONG, Dong-wei LI, et al. Modeling and analysis of magnetic field distribution for stack giant magnetostrictive actuator[J]. Optics and precision engineering, 2017, 25(9): 2347-2358.
DOI:
Zhong-bo HE, Ce RONG, Dong-wei LI, et al. Modeling and analysis of magnetic field distribution for stack giant magnetostrictive actuator[J]. Optics and precision engineering, 2017, 25(9): 2347-2358. DOI: 10.3788/OPE.20172509.2347.
Modeling and analysis of magnetic field distribution for stack giant magnetostrictive actuator
a kind of Stack Giant Magnetostrictive Actuator (SGMA) was designed
then the magnetic field distribution model of SGMA was established
and analytical research on model was conducted to increase uniformity of bias magnetic field of GMA. Firstly
given the characteristics and drawbacks of infliction way of bias magnetic field in traditional GMA
structural form of alternative arrangement for permanent magnet and GMM rod was adopted to design SGMA. Then by combining magnetic circuit model with Biot-Savart law
magnetic distribution model can accurately describe magnetic feature of SGMA was establish. Subsequently
the influence of different parameters on magnetic field distribution feature was analyzed on established model
and structural design method of SGMA was proposed. Finally
model verification experiments were conducted. The result indicates: maximum relative error is lower than 4% when using established model to describe magnetic field distribution of SGMA; maximum relative error is lower than 5% at the time of predicting output displacement of SGMA. The established model in this paper can describe work state of SGMA accurately
increase system precision of SGMA and provide reference basis for structural design of SGMA.
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references
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